docs: def read_string(self, content):
          """Parse a string containing C/C++ source code.
  
          :param content: C/C++ source code.
          :type content: str
          :rtype: Declarations
          """
          reader = source_reader.source_reader_t(
              self.__config,
              None,
              self.__decl_factory)
          decls = reader.read_string(content)
          self.__xml_generator_from_xml_file = reader.xml_generator_from_xml_file
          return decls